<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div><br></div><div><br>On 27 Apr 2017, at 16:29, Nelson Lameiras <<a href="mailto:nelson.lameiras@lyra-network.com">nelson.lameiras@lyra-network.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><div>Hello oVirt gurus,<br></div><div><br></div><div>When activating/deactivating memory balloning on VM, this will change /usr/libexec/qemu-kvm command line on host on vm startup (you can see it using "ps aux"). </div><div>So I understand a vm reboot is needed to take this change into account.<br></div></div></div></blockquote><div><br></div>Right. That option controls the presence of the virtio-balloon device which is not hotpluggable <div><br><blockquote type="cite"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><div><br></div><div>But when activating/deactivating memory balloning on Cluster (plus MoM Sync on host) I do not really understand what happens "under the hood"<br></div></div></div></blockquote><div><br></div>This controls the actual behavior, inflating and deflating of those balloons. That can be done in runtime as it is external to the VM, managed by MOM demon. </div><div><br><blockquote type="cite"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><div><br></div><div>- Is there a mechanism on host which controls "memory balloning" globally?<br></div><div>- Is it able to change it's behaviour "on the fly" with "MoM Sync" ?</div></div></div></blockquote><div><br></div>Yes. You can change the policy/behavior. </div><div><br></div><div>HTH,</div><div>michal</div><div><br><blockquote type="cite"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><div><br></div><div><div>If you have any information, it would be greatly appreciated</div><div><br></div><div>cordialement, regards,</div><div><br></div><table style="margin:0px;table-layout:fixed;border:none;width:345pt;padding:0px" width="460" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:86.25pt;text-align:left" width="115" valign="top"><a href="https://www.lyra-network.com/" style="border:none;text-decoration:none;width:100%;display:block;clear:both"><element-signature_logo_lyra_115x94.jpg></a><br></td><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:258.75pt" width="345" valign="top"><table style="margin:0;width:258.75pt;table-layout:fixed;border:none" width="345" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="font-size:16px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:18px;font-weight:bold">Nelson LAMEIRAS</td></tr><tr><td style="font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px;line-height:16px">Ingénieur Systèmes et Réseaux<span style="font-family:Arial,sans-serif;color:#337ab7;font-size:11px"> / Systems and Networks engineer</span></td></tr><tr><td style="line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;font-size:11px"><span style="font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px">Tel: +33 5 32 09 09 70</span></td></tr><tr><td style="line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;font-size:11px"><a href="mailto:nelson.lameiras@lyra-network.com" style="font-size:11px;font-family:Arial,sans-serif;line-height:16px;text-decoration:none">nelson.lameiras@lyra-network.com</a><br></td></tr><tr><td style="line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;font-size:11px"><a href="https://www.lyra-network.com/" style="font-size:11px;font-family:Arial,sans-serif;line-height:16px;border:none;text-decoration:none">www.lyra-network.com</a> <a href="https://payzen.eu" style="font-size:11px;font-family:Arial,sans-serif;line-height:16px;border:none;text-decoration:none"> | www.payzen.eu</a><br></td></tr></tbody></table></td></tr></tbody></table><table style="margin:0;table-layout:fixed;border:none;width:345pt" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:24pt;text-align:left" width="32" valign="top"><a href="https://www.youtube.com/channel/UCrVl1CO_Jlu3KbiRH-tQ_vA" style="border:none;text-decoration:none;margin:0;float:left;display:inline-block;width:32px"><element-signature_logo_YouTube_32x28.jpg></a><br></td><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:30.75pt;text-align:left" width="41" valign="top"><a href="https://www.linkedin.com/company/lyra-network_2" style="border:none;text-decoration:none;margin:0;float:left;display:inline-block;width:41px"><element-signature_logo_LinkedIn_41x28.jpg></a><br></td><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:31.5pt;text-align:left" width="42" valign="top"><a href="https://twitter.com/LyraNetwork" style="border:none;text-decoration:none;margin:0;float:left;display:inline-block;width:42px"><element-signature_logo_Twitter_42x28.jpg></a><br></td><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:258.75pt;text-align:left" width="345" valign="top"><a href="https://payzen.eu" style="border:none;text-decoration:none;margin:0;float:left;display:inline-block;width:61px"><element-signature_payzen_61x28.jpg></a><br></td></tr></tbody></table><table style="margin:0;table-layout:fixed;border:none;width:345pt" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td><hr style="background:#293b79 none repeat scroll 0% 0%;width:100%;height:4px;color:#293b79;margin:0px"></td></tr></tbody></table><table style="margin:0;table-layout:fixed;border:none;width:345pt" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:30.75pt;text-align:left"><div>Lyra Network, 109 rue de l'innovation, 31670 Labège, FRANCE</div></td></tr></tbody></table><div><br></div></div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Users mailing list</span><br><span><a href="mailto:Users@ovirt.org">Users@ovirt.org</a></span><br><span><a href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a></span><br></div></blockquote></div></body></html>